record ConstructionConcrete = BuildingSystems.Buildings.Data.Constructions.OpaqueHygroThermalConstruction(final nLayers = 2, thickness = {0.1, 0.1}, material = {BuildingSystems.HAM.Data.MaterialProperties.HygroThermal.Beton(), BuildingSystems.HAM.Data.MaterialProperties.HygroThermal.Beton()});